noun
- Plural of anagenesis; evolutionary change within a single lineage over time, without branching or speciation.
Usage: biology; evolutionary biology; technical
Examples
- The fossil record shows several anageneses in mammalian lineages during the Cenozoic era.
- Anageneses differ from cladogenesis in that they do not produce new species through branching.
- Paleontologists study anageneses to understand how organisms change gradually within their own evolutionary line.
- Multiple anageneses can occur simultaneously in different populations of the same ancestral species.